1 # SPDX-License-Identifier: GPL-2.0
3 depends on PPC64 && PPC_BOOK3S
4 bool "IBM pSeries & new (POWER5-based) iSeries"
5 select HAVE_PCSPKR_PLATFORM
17 select PPC_RTAS_DAEMON
18 select RTAS_ERROR_LOGGING
30 depends on PPC_PSERIES
31 bool "Support for shared-processor logical partitions"
33 Enabling this option will make the kernel run more efficiently
34 on logically-partitioned pSeries systems which use shared
35 processors, that is, which share physical processors between
36 two or more partitions.
39 bool "Dispatch Trace Log"
40 depends on PPC_SPLPAR && DEBUG_FS
42 SPLPAR machines can log hypervisor preempt & dispatch events to a
43 kernel buffer. Saying Y here will enable logging these events,
44 which are accessible through a debugfs file.
46 Say N if you are unsure.
49 tristate "pSeries energy management capabilities driver"
50 depends on PPC_PSERIES
53 Provides interface to platform energy management capabilities
54 on supported PSERIES platforms.
55 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
56 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
59 tristate "Scanlog dump interface"
60 depends on RTAS_PROC && PPC_PSERIES
63 bool "IO Event Interrupt support"
64 depends on PPC_PSERIES
67 Select this option, if you want to enable support for IO Event
68 interrupts. IO event interrupt is a mechanism provided by RTAS
69 to return information about hardware error and non-error events
70 which may need OS attention. RTAS returns events for multiple
71 event types and scopes. Device drivers can register their handlers
74 This option will only enable the IO event platform code. You
75 will still need to enable or compile the actual drivers
76 that use this infrastructure to handle IO event interrupts.
78 Say Y if you are unsure.
81 bool "LPAR Configuration Data"
82 depends on PPC_PSERIES
84 Provide system capacity information via human readable
85 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
87 config PPC_PSERIES_DEBUG
88 depends on PPC_PSERIES && PPC_EARLY_DEBUG
89 bool "Enable extra debug logging in platforms/pseries"
92 Say Y here if you want the pseries core to produce a bunch of
93 debug messages to the system log. Select this if you are having a
94 problem with the pseries core and want to see more of what is
95 going on. This does not enable debugging in lpar.c, which must
96 be manually done due to its verbosity.
99 bool "Support for shared-memory logical partitions"
100 depends on PPC_PSERIES
103 Select this option to enable shared memory partition support.
104 With this option a system running in an LPAR can be given more
105 memory than physically available and will allow firmware to
106 balance memory across many LPARs.
109 tristate "Collaborative memory management"
110 depends on PPC_SMLPAR
113 Select this option, if you want to enable the kernel interface
114 to reduce the memory size of the system. This is accomplished
115 by allocating pages of memory and put them "on hold". This only
116 makes sense for a system running in an LPAR where the unused pages
117 will be reused for other LPARs. The interface allows firmware to
118 balance memory across many LPARs.
121 bool "Hypervisor supplied PMU events (24x7 & GPCI)"
123 depends on PERF_EVENTS && PPC_PSERIES
125 Enable access to hypervisor supplied counters in perf. Currently,
126 this enables code that uses the hcall GetPerfCounterInfo and 24x7
127 interfaces to retrieve counters. GPCI exists on Power 6 and later
128 systems. 24x7 is available on Power 8 and later systems.
133 depends on PPC_PSERIES
138 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
139 bool "Support for GX bus based adapters"
141 Bus device driver for GX bus based adapters.
144 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
145 tristate "Support for the PAPR Storage Class Memory interface"
147 Enable access to hypervisor provided storage class memory.
150 bool "Secure virtual machine (SVM) support for POWER"
151 depends on PPC_PSERIES
153 select ARCH_HAS_MEM_ENCRYPT
154 select ARCH_HAS_FORCE_DMA_UNENCRYPTED
156 There are certain POWER platforms which support secure guests using
157 the Protected Execution Facility, with the help of an Ultravisor
158 executing below the hypervisor layer. This enables support for